The artists, who lead Google's Big Picture visualisation research group in Cambridge, Massachusetts, state: "Our medium is data visualization, a technology developed by computer scientists to extract insights from raw numbers."

In this still frame from 11 am EDT today, we can see where the kite-flying weather is. Chicago is known as the Windy City: now we can see the winds coming down from Canada and the Great Lakes. There is also a swirl in the south and the strongest winds flowing across the west and north to Canada.